327 yards, 2 feet, and 7 inches.
Don't shoot past that.
Historically, heavy arrows were used by the Europeans at whatever range the arrow would fly. Wars were won using arrows in this way. At that range bodkin points penetrated a lot, including armor in some cases.
I am gonna guess the heads were nowhere near as sharp as what we use.
And west Asian horse warriors used lighter arrows in the same way.
I get a bit worried when we discuss things like "how far", "how light", "how slow" etc in a bow hunting forum, for the single reason that there are newer folks, or not so well versed folks who are really trying to absorb all this information, but who do not yet have the background to discern theory from an absolute approval to use this or do that.
Unlike a bullet that runs out of energy and then, eventually, you have a 180 or less grain projectile that bounces off and just makes you upset, with a sharp arrow of any real (trad) weight, just dropping it ten feet will allow that to penetrate your skin and body.
Do a test. . try it out ( please. . . use a piece of hide or something other than your body. . or your little brothers').
ChuckC